Motor-wheel for cycles.



A. C. SEIBAK. vMO'IR. WEEEL FOR CYCLES. APPLIUATION FILED PERS, '1910.

Patented Oct. 15, 191.2.

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ILO. SEIBAK. MOTOR WHEEL FOB. CYCLES'. APPLICATION FILED PEB.3.1910

1,041,51 9.- Y Patented oon. 15, 1912.

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me/who @IWW y f A, G. SLIBAK. MOTOR WHEEL FOR CYCLES.

APPLICATION FILED FEB.3, 19 10.

LQCLlQ, Patented 0ct.1 5,1912.

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.AlEtTI-IUIEL'C. SEIBAK, 0F SAN FRANCISCO, CALIFORNIA.

MOTORWHEEL FOR CYCLES.

' Specification of Letters Patent.

Patented Uct. 15,1912.

Application led February 3, 1910. Serial No. 541,718;

To all whom it may concern..

Be it known that I, ARTHUR C. Sinnen, a subject of the 'King of Denmark, residing at San Francisco, inthe county ot San Francisco and State of California, have `invented certain new and useful Improvements in Motor-Wheels for Cycles, of which the following is a specilication.

This invention relates to motor wheels for cycles. p

The object of the invention is to provide an article of this character in which the engine shall be rigidly supported from the frame ot' the machine in such manner as to reduce Vibration to a minimum; in which the supply of oil for lubricating and gasol ene or other'hydrocarbon shall be wholly confined within the hub ot the drive-wheel of the machine; and in which the supply of the explosive mixture shall be constant under all conditions of use, thus to insure even and steady running of the machine.

With the above and other objects in view, as will appear' as the nature of theV invention is better understood, the same consists in the novel construction and combination of parts ot a motor wheel for cycles, as will be hereinafter fully described -and claimed.

In theaccompanying drawings, forming a part of this specification, and in which like characters of reference indicate correspondg ingparts: Figure 1 is a View inV side -elevation of a motor wheel constructed in ac-v cordance with the present invention, a portion of the structure being removed to ex pose theinterior parts. F ig. 2 is a similar view taken from the opposite side of the wheel to that shown in Fig. 1. Fig. 8 is a transverse sectional view taken through the center of the wheel. Fig. Ll isa detail view showing the connection between the magneto-generator and the spark plug.

i Referring to the drawings, F designates a portion of the frame of a motorcycle, and with which the motor wheel is rigidlylconnectcd from the supporting axle in the usual manner, and as this frame'may be ot the common or any preferred construction, further desoription is deemed unnecessary.

The motonwheel comprises in part `a circular main casing or chamber 1 from one side of which projects an arm 2 that is connected with the lower frame-bar f by a clip C, it being understood that there'is one of these arms on cach side of the chamber. Arranged within the main chamber or casing 1 is a cylinder casing Il, which is preterably cast integral with the chamber, the latter of which is divided into two compartments 5 and 6, the compartment 5 to contain oil and the compartment 6 gasolene or the like. The casing is provided at its' lower end with a circularpextension 7 that is provided with two shoulders 8, and to these shoulders 'is bolted the cylinder1` 9 which, as usual, is provided with coolinglanges 1() and with a mixing chamber 11 that communicates with the upper portion of the cylinder.

. TWithin the cylinder is arranged a piston 12 of the usual or any preferred construction with which is pivotally connected the upper end of a connecting rod 13, the lower end of which is journaled on the cross-arm 14 of a crank l5 having lateral arms 16 and 17 that are `iournaled in suitable bearings 18 formed in the lower portion of the cylinder, the arms beingeach provided in'this instance with two packing rings to prevent escape of air from the air-chambertormed by the extension 7. Upon the arm 17 is mounted a'pinion-2O that meshes with a gear 21 mounted upon a drive shaft 22,which latter also carries a sprocketwheel 23 that is engaged by a sprocket chain 24 that passes to the sprocket wheel of the treadle shaft, not shown, in the usual manner.

Extending from opposite sides of the cylinder 9, and in axial alinement are bosses 25 and 26, each of which is provided4 with a reduced threaded extension 27 that extends through the ,crotches ofthe frame, and are held rigid therewith by nuts 28. The boss 26 is the longer and has mounted thereon a loose idler pinion 29 a fixed cover plate 30. The gear 21 meshes witlLt-he pinions 20 and 29 and is driven by the former and drives the latter, whereby uniformity and steadiness ot motion issecured The motion of the pinion 29 may be employed for driving a magneto if desired.

` The casing is provided with two races 31 in which are arranged ball-bearings 32, and these are engaged by the hub 83, which, as

'clearly shown in Fig. 3, is a twopart structure,tl1e opposing .edges vot whichV are formed with tlangesfl through which pass bolts orscrews 35. The hub sectionshave connected with them spokes 36 of any pref, ferred construction, and which are combined with a rim 37, as usual. @ne of the hub sections is provided with an 'internal gear 38 which is engaged by the gear 21, and by which it is drlven. The open side of this gear is closed by the cover plate 30, which protects the same fromK dust and dirt.

` As usual, there is arranged adjacentto the mixing chamber a s ark-plug 53, which is suitably connected With the magneto-generator.

The cylinder is provided with a istoncontrolled escape port 54, and with a ranch pipe 55 that communicates with the airchamber and with the external air, and is provided with a ball valve 56 which closes on the compression stroke of the piston and opens on the Working stroke.

The4 peculiar advantage of employing a pump, such as shown, for supplying predetermined charges of gasolene to the mixing chamber is rthat such charges will always be uniform irrespective of the character of the vground over which the machine may be travcling, so that easy and uniform running will be ecured. y

ile the improvements herein described are simple in character, they willv be found thoroughly effective for the purposes designed, and Will -coact in the production of an effective and durable form of motor wheel.

I claim 5 -1. A motor Wheel, including a main chamber or casing, a cylinder therein, a gasolene reservoir supported by the cylinder, a piston arranged in said cylinder, a piston rod Copies of this patent may be obtained for five cents each, by Washington, D. C.

coupled tosaid piston, a crank-shaft having connection with said piston rod, a hub revolubly mounted on the main chamber or'casing, an internal gear-Wheel carried thereby,y

a plnion carried by said crank-shaft, a driveshaft journaled on the main chamber or casing, a gear carried thereby and meshing with said drive sproc Shaft- 2. A motor Wheel, including a main chamber or casing, a cylinder therein, a gasolene reservoir supported by the cylinder, a piston arranged in said cylinder, a piston rod coupled to said piston, a crank-shaft having connection with said piston rod, a hub revolubly mounted on the main chamber or casing, an internal gear-Wheel carried thereby, a pinion carried lby said crank-shaft, a driveshaft journaled on the main chamber or casing, an idler pinion journaled on the cylinder, a drive gear on the drive-shaft meshing With said pinions and internal gear, a drivesprocket on the drive-shaft, a mixing chamber, means for supplying an explosive mixture thereto, and means for exploding the mixture.

et also carried by said driveinion, and gear-Wheel and a;

In testimony whereof I affix my signature p l 1n presence of tWo Witnesses.

ARTHUR C. SEIBAK.

Witnesses:

' HERMAN PETERSON, AXEL W. PETERSON.

addressing the Commissioner of Patents, 

